Here is a great shot of Biscuit's amazing feet in action! There are multiple ridges and folds on the surface of her feet creating a huge surface area in a space just a centimetre wide. This means that the area of grip is huge compared to the weight of her body and she is able to walk up glass. She also has curved claws as a back up for holding onto rougher surfaces. When she walks on your hand you can feel the grip effect in action, it feels a bit hot and prickly but not unpleasant.